nbme 3 S2 Cohort Study

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nbme 3 S2 Cohort Study

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16 Posts

enthu
Forum Junior

Topics: 14
Posts: 42

03/10/06 - 04:08 AM

16. A 3-year study is planned to assess the incidence and etiology of respiratory

disease in 574 individuals greater than age 60. The study population consists of

two groups: one group cares for children under the age of 5; the second group

does not care for children. At the onset of respiratory symptoms, cultures and

serologic studies will be performed. Which of the following best describes this

study design?
A. Case-control
B. Case series
C. Clinical trial
D. Cohort
E. Community survey

rthungat
Forum Newbie

Topics: 4
Posts: 11

03/10/06 - 08:44 AM

rthungat
Forum Newbie

Topics: 4
Posts: 11

03/10/06 - 08:45 AM

druas
Forum Elite

Topics: 47
Posts: 319

03/10/06 - 01:28 PM

d?...trying to find incidence going forward in time...

Geroo
Forum Guru

Topics: 114
Posts: 799

03/10/06 - 02:57 PM

enthu
Forum Junior

Topics: 14
Posts: 42

03/11/06 - 02:29 PM

I agree to D

thatsme
Forum Newbie

Topics: 4
Posts: 22

03/14/06 - 06:06 PM

star1
Forum Guru
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Topics: 93
Posts: 826

03/17/06 - 01:25 PM

Its D prospective study

case control is retrosepective

surgeon99
Forum Senior

Topics: 9
Posts: 98

04/15/06 - 08:27 AM

ya it is a cohort stydy.
In clinical trail there is comparison between two treatments.

krsna
Forum Senior

Topics: 1
Posts: 211

04/25/06 - 10:46 AM

#10

in case control study incidence cannot be found out...neither can be prevalence...swo its D according to me...

smal
Forum Guru
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Topics: 140
Posts: 727

04/28/06 - 01:00 PM

#11

dear frnds,

i think its A.coz here we r comparing 2 grps.

not C coz in clinical trial we giv the ppl someting and then study them

not cohort coz we study them for a period of time long enuff till the disease appears in them.

all comments r welcomed.

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ladybug
Forum Senior
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Topics: 20
Posts: 57

05/09/06 - 04:25 PM

#12

smal,

COHORT prospective

CASE CONTROL retrospective

I think D, because the study is prospective.

netlover
Forum Junior

Topics: 3
Posts: 54

05/28/06 - 01:41 PM

#13

smal, you should read the first line of the qestion stem one more time. Then you will find out there is one word giving you the right direction---"planned"

doctorsaib
Forum Newbie

Topics: 2
Posts: 10

06/07/06 - 02:58 PM

#14

This question screams of COHORT study design. There are 3 major clues in the question stem:

1) INCIDENCE will be assessed. Only Cohort studies allow you to assess incidence.

2) The "risk factor" here is caring vs. not caring for children under 5.

3) "At the onset of respiratory symptoms, cultures and serologic studies will be performed." Meaning Dz will come at some point in the future.

Remember, in a cohort study, you split groups based on RISK FACTOR(S), which is caring for children under 5, in this scenario. The DISEASE that will be assessed is respiratory Dz, which is hypothesized to come at some point in the future.

Be aware that there is a variant of cohort studies called the Retrospective Cohort design, where exposure is ascertained from past records and outcome (i.e. Dz vs. no-Dz) is ascertained AT THE TIME the study is begin.

I did my MPH in Epi/Biostats... smiling face

mjl1717
Forum Hero
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Topics: 955
Posts: 5,450

06/07/06 - 03:07 PM

#15

doctorsaib wrote:
This question screams of COHORT study design. There are 3 major clues in the question stem:

1) INCIDENCE will be assessed. Only Cohort studies allow you to assess incidence.

2) The "risk factor" here is caring vs. not caring for children under 5.

3) "At the onset of respiratory symptoms, cultures and serologic studies will be performed." Meaning Dz will come at some point in the future.

Remember, in a cohort study, you split groups based on RISK FACTOR(S), which is caring for children under 5, in this scenario. The DISEASE that will be assessed is respiratory Dz, which is hypothesized to come at some point in the future.

Be aware that there is a variant of cohort studies called the Retrospective Cohort design, where exposure is ascertained from past records and outcome (i.e. Dz vs. no-Dz) is ascertained AT THE TIME the study is begin.

I did my MPH in Epi/Biostats... smiling face

Im glad you are here!!!!!!!!! Also the first line says a 3 year study is planned

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Diego Casali
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Topics: 7
Posts: 232

06/08/06 - 01:21 AM

#16

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